Cable-straining anchorage clamp



May 28, 1929. 1.. l. CLARK CABLE STRAINING ANCHORAGE CLAMP Filed Feb.11, 1928 INVENTOR v .Zuiiaerl'hrk,

QM: ATTORNEY Patented May 28,1929.

Lamina LeLARK, on NEW YORK, N. Y... .1 H

V bABLE-STB INI G A'Nc oRAeEoLAMr.

.hpplicat ion file d February 11, 1 928 Seria1"No. 253,696. I

My invention relates to strain clamps and particularly to a suspensionclamp for securingand'anchoring cable's, conduct-or wires, guy wires orlike members to supports there for. i Direct the main clampwhich can beeasily applied to a conductor, cable or guy wire and advantageouslyemployed vfor either strain or'anchor posicable into true snubbing'position.

Another object of my invent on is to pro "videa strain clamphaving acable receiving seat of wedge shape whereby increase of loaduponthecable williesult in increasing positive grip, between the"opposing 'vvalls offthe wedge seat and the cable. i

' Still another object of strain clamp which shall cooperate with'thewedge seat mentioned above to positively grip" the cable I againstslipping and in snubbing position.

A still further object'oiiiny' invention isto provide a clamp of maximumstrength value,

And still further objects of the invention .are to provide a:clampof'theclass named which shall be economical to Inanni'acture,'veasytoinstall, eflicient n operation, n which shall mi'nimize thedangerof injury to the arrangement and construction of the several intheseveral'vievvs: p v

Fig. 1 is an elevation of the clamp con- 7 supported cable-"or likemember,

Yl Vith these and other ob ects view the invention further consists inthe comblnation,

parts hereinafter described. and pointed out in the various cla ms. 1

- In the drawings wherein .similar refer ence characters designatecorrespondmg parts zieetsdte a sable and shown in strain position.

clamp in strain, position;

objects of my invention is to provide transmission l1ne or cable F g. '61s positioning of the my invention providepositives'ecuring means on acable The eye bars 5 andf 6 are provided with anchor bolt holes 6,whereby to permit the athxingof the device to any=suit'able'anch'or- 1Fig.'2 is an endelevational view of tlie .55 y

Fig. '3 vis-a bjotton'i plan view of the clamp in strain Position; rFig; 4 is a detail'sectional H of Fig. 1, viewed'irithedirectionof thearrow 1 F W 7' Fig. 5 isl'a detail sectional vievvon theline View: ontheline '5 5 of Fig. 1, viewedin' the direction of the arrow.

Fig. 1, looking in the direction' of the arrow;-

a sectional'view along line 6 .6lof i i y I i r i "Fig. 7 1s anelevatlonoftheclamp and the cable in] unwoun position showing the .I'

the clamp. p l 1 I Asfshown inFig. 1, the clamp consists of a metallicbody '1, having integral. therewith a ma or'sheave-likecable seat 2'and'a minor- 1. 1The.purpose.of this-openingis'=for"easy cable thsmiWPPlyin I the device. I v

Both body 1 and, major sheave 2 are.

b M 1 6- 'espectivel p y age means not shown by the usual understoodanchorage bolt,fnot shown. Theseeye bars "method ot winding the cable inposition on. I

equipped with holding lugs in'the form of eye. I V

are turther provided with supplemental holes '1 8, which are utilized toreceive a boltor hook, i

not. shown, whereby to temporarily attach a block andffall", or othersuitable .jstraining j means,'whereby the snubber and its engaged.-

cable may be pulled to strained and anchor age engagingposition,"tofpermit;the introduct-ion of the permanent anchor-boltbetween the snubber and permanent anchoring means.

' Each-of the sheaves 2 and, 3 havetapered wedge seats?) at theirjunction with the body a.

the shape as shown.

10 in the direction of thearrow,, shown in Fig. 6, Wedges the cablelfirmly between the Walls MM 1 O a-and 1; It shouldbe observed that"there is thus provided opposite or tapered seats that positivelygrip-the cable" san cableincreasesg '1. These seats, of cour's e, arenot limited tov V It is suflicient'ifthey are so designed,thatinovementof the cable V a U bjolt 1 L locked 'theretoby nuts15. -Tliis order. topositively position and grip the cable in its exposedpos'ition at thegap 4, a U .bolt 11 is aflixed to thebody 1 by bolt 'nuts 12; This bolthasa further function as .Wlll be later explained.

A bolt 100]: seat 13 is formed integral with j the body 1 and minorsheave 3;and receives '1 bolt functions'to positively position'and gripthe endof the cable in snubbed position.

Aflixedt'o the body 1 and the major sheave 2 is a thirdbolt 16 securedthereby by a nut 17,

- Whih P i ely retainsor positions the cable 10. in the Wedge seat 9.-

-The end 18 0f the wedge be laying of the cablethereonr crescent shaped,if desired, to facilitate the in Fig. .7, the cable end 19 is passedthrough the v,U bolt 11 andthelatter is then locked;

securclyagainst; the cable. By rotating the clamp about the bolt 11 as acenter in-thedifrectionof the arrow, the clamp assumes the positionshownby the dotted lines in F1g.'7..

7 WVhile the clamp is being rotated about an I axis normal to thedirection of the load on the cable, the cable is being wound about thevarcuate wedge seats 9. M It shouldbe observed that all the rotationisin a single plane, which i also' is theplane of the direction of theload on the cable.

I The bolt 16 and the U bolt 14 are an 86 cured't'o the clamp when thecable hasv been wound aboutthe wedge seat, thus positively gripped. Itwill be noticed that the greater .1 r the load on .the'cable-,'thegreater will the tendency be to accentuate the snubbing action and wedgethe cable into the arcuate wedge seats.

It is to be understood that the clamp can be usedto take up slackin acable secured at both I Again pointing out ends; j The bolt need only beremoved tofallow il the cable to bepositioned inithe gap. The

tively gripping the cable in position. The

.bolt then is fixedly secured thereto thusposisucceeding. operations arethen as described heretofore.-

, general advantages of the construction, I

. cla m asmy lnventlon:

I 1. Aholder forcables comprlsing a clamp-, ,ing member, a snubblngmember associated therewith and revoluble about said clamping member asa center for windingthe cable about said snubbing member in a singleplane,

' and-a second clamping means associated with said snubbingmemberj'forpreventing the un winding of the snubbed end of said cable. 3

that yari ations'; in I de' OfFebruary A. D.

2. A clamp adapted to support a cable in either strain, anchor or otherposition, said clamp. having 8 shapedwedge seatpon. mom-means associatedwith a portion of the S 1 shape for maintainingthe cable in contactwith. said seat portion, and means associated with the ends "of the Sshape for gripping a portion of the cable whereby a snubbing.

ing a curvilinear Wedgeseat jsnubbi ng member, and a plurality of boltmeans associated with said member adapted to f rmly seat said oppositeto the load on the cable. I -4. In combination, a cabl a clamp thereforto support a cable in strain or anchor po s'itionicomprising a cableseat portion adapted to seat said cable therein in a single plane in thedirection of said load, anda second positively position said cable inthe direction opposite to saidload. V 4 5. A cable strain clampcomprising an S shaped saddle member .providedwith awedge H .seattofreceive said cable', a- -boltassociated cable in said wedge seat, oneof said bolts, positively poslt onmg said cable in a dlrection 'in thesame and'oppos ite directions ofthe load on the cable, means associatedwith said seat portion to positively position said cable lineansassociated with said'seatportion to" with one end of saidjinember topositively position'said cable in said seat in the direction of the loadon the cable, a U; bolt associated cable in said seat in a;directionopposite to bolt assocated with j said, memberv to posi tively positionsaid cable intermediateof said above directions."

6. A cable strain cla p comprising a saddle member, boltmcans associatedWith said saddle member}to positivelygrip said cable againstsaid1nember, means associated with -said member providing opposed varcu'ate7 p "With said member to positively position said I I gripping the cablethereto. The clamp is; then connected to its anchorages as previouslydescribed. When the cable 10 is pulled taut the action of the clamp isobvious. Due to the U bolts 11 and 14 the cable ispositively I thedirection ofthe loadonthe'cablaa second cablesnubbing portions havingwedges'eats, 1; l a second bolt means associated with. one, of

said arcuate portions and cooperatingwith v said first bolt meansv to:positively position said cable within the seat thereof,and a third fbolt: means associated with the other o'fsaid arcuate portions andcooperatingfw'ith'said first bolt means to'positivelyposition cablewithin the seat thereof.

7. A' cable strainclamp'comprisinga cable seat portion adapted to seat acable therein in the same and oppositedirections'of the said load on thecable, and meansassociated'with said seat portion to positively positionsaid cable in the direction opposite tosaid load. 1

Signed atNew York in the county of New, i

York and State of New Yorkthis 10th day LUTHER VV'I. omen.

